(19)

(11)

EP 3 850 033 A1

(12)

(43) Date of publication: 21.07.2021 Bulletin 2021/29 (21) Application number: 19797539.4 (22) Date of filing: 06.09.2019

(51) International Patent Classification (IPC):  C08G 65/40(2006.01) C08G 75/23(2006.01) B01D 71/68(2006.01) H01M 8/02(2016.01) (86) International application number: PCT/EP2019/073783 (87) International publication number: WO 2020/053077 (19.03.2020 Gazette 2020/12)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 11.09.2018 EP 18193780 (71) Applicant: BASF SE 67056 Ludwigshafen am Rhein (DE)	(72) Inventors: WEBER, Martin 67056 Ludwigshafen (DE) MALETZKO, Christian 67056 Ludwigshafen (DE) BACKES, Rene 67056 Ludwigshafen (SE) (74) Representative: BASF IP Association  BASF SE GBI-C006 67056 Ludwigshafen 67056 Ludwigshafen (DE)